Listbox in container issue

I have a container the size of the window (call it A) which contains another longer container (call it B) so I can vertically scroll the contents of the window. In the longer B container I have 5 listboxes (8 lines each). When I update the contents of the 5 listboxes the listbox (or portion thereof) that is not within the A container is not updated.

I was so surprised by this that I didn’t even notice it for weeks. Is this expected or a known bug?

MacOS with Xojo 2025r2.1. Since I am currently determined to not upgrade Xojo at the new price any suggested workarounds are appreciated.

Let me get this straight.

  • 5 list boxes in container B
  • Container B in Container A
  • When you update one of the 5 list boxes that’s not in container A, it doesn’t update?

How is that even possible??? The list boxes are inside A because they’re inside B. Right???

a picture of the layout designer might help

And what platform you’re on.

if you search Xojo’s Issues for the two separate words “listbox” and “container” there are a few oddities reported about listbox in containers behaving strangely

This may be one of those

Oh and is this using. the new DesktopContainer, DesktopListbox etc ?
Or Classic ContainerControl, Listbox etc ?

does something like this show the problem ?